Reproducer or sound-box for talking-machines.



A. H. RYDER.

HEPHODLICER 0H SOUND 80X FOR TALKING MACHINES.

APPUCATION FILEDIUNE2W19|6- Patented Sept. 4, 1917 5] vwawfoz flrtkzu' l7. Ryder: @51 11.3.5 Quota 12;: a}?

ARTHUR H. RYEEB, 0F BROOKLYN, NEW YORK.

BEPBODUCER 0R SOUHD-BOX FOR TALKING-MACHINES.

Specification of Letters Patent.

Patented Sept. 4', 1917.

Application filed June 20,, 1916. Serial No. 104,660.

To all whom it may concern:

Be it known that I, ARTHUR H. RYDER, a citizen of the United States, and residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Reproducers or Sound-Boxes for Talking-Machines, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to reproducers or sound boxes for talking machines and other machines of this class, and the object thereof is to improve the construction of devices of this class in such manner that the operation thereof or the tone produced thereby will be more smooth and regular and free from metallic vibrations than other devices of this class, and whereby the volume of the tone or the sound produced will be increased or decreased as may be desired, and whereby the reproduced voice will be more distinct and clear than is possible with other devices of this class as now constructed.

The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which 2- Figure 1 is a front view of a sound box or reproducer made according to my invention with part of the construction broken away; I

Fig. 2 a section on the line 2-2 of Fig. 1; and

Fig. 3 a view looking in the direction of the arrow 3 of Fig. 1.

In the practice of my invention, I provide a box or casing 0, comprising a back ortion a, and a front portion a and the ack portion a. is provided with a tubular neck a, in which is secured a tube 6 by which the device is connected with the machine in the usual manner, and the tube b registers with a central aperture a in the hack body portion a at the front of which isan annular flange a provided with teeth a between which are corresponding recesses.

The front part a of the box or casing is circular in form and forms in connection with the back part a cup-shaped recess a in the annular walls of which 18 an annular rabbet groove a forwardly of wh'ch is a supplemental groove a preferably -shaped projecting head a in cross section, and the diameter of which is greater than that of the rabbet groove a.

The diaphragm c is similar in form to others of its class and on the perimeter thereof is mounted a rubber band or frame c, and in assembling the parts, the diaphragm with its hand or frame a is inserted into the rabbet groove a", after which an annular elastic lock d is inserted into the groove 02 and the inner diameter of which is less than the outer diameter of the diaphragm c and its frame 0, and this securely holds the diaphragm and its frame in position. The part (2 is preferably made of tubular rubber through which is passed an elastic metalliewire or rod d, but said part d may be made in any desired manner.

At one side of the body or casing a, preferably at the bottom thereof, are projecting cars a. between which is pivoted a block :2 having a. forwardly directed finger piece e and a similar backwardly directed finger piece a and the vibrator arm f which may be of the usual form is provided with a cupshapcd head f which bears -on the diaphragm 0 but has no rigid connection therewith, and the arm f is riveted or otherwise secured in the finger piece e and is provided adjacent thereto with projecting side or stop pins f The block e is provided on the side thereof adjacent to the box oicasing a with a and a pivot pin e is passed through the ears 0 and through said head 6 in connecting the block e with the box or' casing a, and the reproducing needle 9 is secured in the block 6 by the set screw 9' in the usual manner. A threaded pin it is secured in a boss a" on the box or casing or the part a thereof, and on this pin are mounted twoadjnsting nuts 5 and j.

I also provide a latesprin Is one end of which is forked and connectef with the pins f on the vibrator arm 7' as shown at In, and said sprin is bent around the head e of the block e between the ears a and the other end portion thereof is formed into a U-shaped loop k through both side arms of which the pin it passes, and said pin it also passes loosely through the backwardly directed finger e of the block a, and placed between the adjusting screws '13 and j and the sides of the U-shape loop is of the spring I: and the backwardly directed finger of the block e are rubber washers m.

I also place in the central aperture 0 of der which said arm operates, as experience has shown that with this construction the character of the re reduced sound may be controlled and ma c smooth and even in volume, and the metallic effect so common in the operation of devices of this class he almost, it not entirely obviated or prevented.

The object of the supplemental diaphragm w, and the inwardly directed flange a? having the teetha in front of said supplemental diaphragm is also to regulate and control the character of the sound reproduced, and these parts also operate to produce the de sired result by controlling and regulating the passage of the sound waves into and through the tube 6.

With my improvement, the box or casing a is formed integral and the means for inserting and securmgthe diaphragm c in position, as shown and described simplifies the assembly and disconnection of the parts of the reproducer or sound box, and while I have shown and described the preferred form or construction of my improvement, my invention is not limited to the use of metallic springs for controlling the operation of the vibrator arm, nor to other details of construction herein shown and described, and changes therein and modifications thereof may be made, within the scope of the appended claims, without departing from the spirit of my invention or sacrificing its advantages.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a device of the class described, a box or casing, a diaphragm mounted therein, a needle block pivoted to said casing and provided with o positelydirected members, one of said mem ers being provided with a vibrator arm which is adapted to operate in connection with said diaphragm, a spring mounted on said block one end of said spring being adapted to operate in connection with said arm and the other end thereof being bent around the other member of said block to form a hook-aha ed spring and adjusting nuts mounted on t e o posite sides of the hook-shaped s rin an the member therebetween where y t ejtension of the vibrator arm on the diaphra i may be re lated.

2. In a device of t 1e class descri ed, a box or casin a diaphragm mounted therein, a needle b ock pivoted to said casing and provided with o positely directed members, one of said mem ers being rovided with 0. vibrator arm which is a aptedoto operate in connection with said diaphragm, a spring mounted on said block one end ofsaid spring being connected with said arm and the other end thereof being bent around the other member of said block to form a hook-shaped spring, a pin mounted in said box or casm' and adapted to pass through said last'name member of said block and said hook-shaped spring, and means adjustably mounted on said pin on the opposite sides of said hookshaped spring and said member therebetween for operating said spring to increase or decrease the tension of said arm on said diaphragn'i. I

3. In a device of the class described, a box or casin a diaphragm mounted therein, a needle bIock pivoted to said casing and pro vided with oppositely directed members, a vibrator arm connected with one of said members and adapted to operate in connection with said diaphragm, a spring mounted on said block one end of said spring being forked and connected with said arm and the other end thereof being bent around the other member of said block to form a hookshapcd spring, said last named member and said hook-shaped spring provided with aperturcs, a pin mounted in said box or casing and adapted to pass through the apertures in said hook-shaped spring and the member thcrcbctwccn, and ad usting nuts mounted on the opposite sides of said hook-shaped spring and said member for regulating the tension of said arm on said diaphragm.

In testimony that I claim the foregoing as my invei'ition I have signed by name in presence of the subscribing witnesses this 2nd day of June, 1916.

ARTHUR H. RYDER. Witnesses (I. E. MULREANY,

l-I. It. 'luoMrsoN. 

